docs: def search(self, query, index=None, **params):
          """
          Queries a search index over objects in this bucket/index. See
          :meth:`RiakClient.fulltext_search()
          <riak.client.RiakClient.fulltext_search>` for more details.
  
          :param query: the search query
          :type query: string
          :param index: the index to search over. Defaults to the bucket's name.
          :type index: string or None
          :param params: additional query flags
          :type params: dict
          """
          search_index = index or self.name
          return self._client.fulltext_search(search_index, query, **params)